Home / 12,780.10-19,168.80-4,014.55

Finding the Fourth Proportional to 12,780.10, 19,168.80 and 4,014.55

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Solution

The fourth proportional to 12,780.10, 19,168.80 and 4,014.55 is: 6,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.10 : 19,168.80 = 4,014.55 : x
  2. Step 2: Convert to fraction form
    12,780.10/19,168.80 = 4,014.55/x
  3. Step 3: Cross multiply
    12,780.10x = 19,168.80 × 4,014.55
  4. Step 4: Simplify right side
    12,780.10x = 76,954,106.04
  5. Step 5: Solve for x
    x = 76,954,106.04/12,780.10
  6. Step 6: Final answer
    x = 6,021.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.